There is a big gap between Tianhuo peak and Longmen peak on the north side of Tianchi in Changbai Mountain. This gap is the water outlet of Tianchi. The water from Tianchi flows out from the gap. The river is washed and eroded along the fault zone for a long time, making the riverbed continuously cut and expanded, forming an enduring river. This river is called "Chengcha River", which also leads to the Tianhe river.
First, the cold river took a leisurely walk in a gentle terrain of about 600 meters. Then the terrain suddenly tilted to the north, and the gentle river immediately became emotional, irritable, rushing, roaring, and jumping all the way. At a distance of about 1250 meters from the Tianchi Lake, after being cut by Funiu stone, the river was changed into two large and one small strands, which jumped up from the cliff and flew down 68 meters from the cliff. It matched the natural barrier jade wall and gold wall, just like two jade dragons falling from the sky. In the process of falling, the two jade dragons were mixed together, and the water was more fierce. They opened their mouths and bravely devoured the protruding stone beach. They rushed to the bottom of the deep pool and splashed several feet high waves and more than ten feet of water mist, forming a magnificent Changbai waterfall.
It passes through the rugged gorge, surging and surging, rushing thousands of miles, torrents and waters, the great land passes through the sky, the clouds turn over, the rain falls, the bells and drums thunder, the shape of a dragon falling into the sea, and the momentum is like ten thousand horses galloping. After thousands of years, the mortar under the waterfall became a water pool about 20 meters deep. The pond water splashes out like a flower in the sky and converges into two white rivers, which are the source of the Songhua River.